Heating device for curls



Dec. 27, 1938. A. s. MOFFAT HEATING DEVICE FOR CURLS Filed June; 10, 1957 2 Sheets-Sheet l Dec. 27, 1938. A; 5. MOFFAT HEAT'I'NG DEVICE FOR CURLS 2 Sheets-Sheet 2 Fi ld June 10, 1937 Patented Dec. 27, 1938 UNHTED HEATING DEVICE FOR CURLS Albert S. Moffat, Watertown, Mass, assignor to Harvey 0. Wheeler, Boston, Mass.

Application June 10, 1937, Serial No. 147,462

1 Claim.

This invention relates to a heating device for curls.

At the present time it is a common practice to use clamp-like heating devices to set curls, first placing said devices in a heater and when they become sufficiently hot they are removed and placed on a curl until they are no longer sumciently hot, or the curl is set. These devices cannot indicate the temperature they have been heated to, yet if one is too hot the hair will be scorched, and should it be left on the curl after cooling off it accomplishes nothing and is otherwise unsatisfactory. Accordingly, it is my object to provide a heating device for curls with means for measuring and indicating the temperature of the device, and with guides which show the temperature point that is too hot for use on hair and the point where it is too cool to have any effect. A further object is to provide such a device that is practically as compact as those now in use and can be manufactured and sold at a relatively low cost. Still another object is to improve upon the construction of the parts forming my device so that it will better retain the heat and provide better outside protection for the user.

The foregoing and other objects which will appear as the nature of the invention is better understood, may be accomplished by a construction, combination and arrangement of parts such as is disclosed by the drawings and specification. The nature of the invention is such as to render it susceptible to various changes and modifications, and, therefore, I am not to be limited to said disclosure; but am entitled to all such changes therefrom as fall within the scope of my claim.

In the drawings:

Figure 1 is a front elevational view of my heating device for curls.

Figure 2 is an end elevational view of my heating device in normal or closed position.

heating device with a modified form of thermometer.

Figure '7 is an end elevational view of my heating device shown in Figure 6.

Figure 8 is a sectional view taken on the line 8-8 of Figure 7.

As illustrated, my heating device has a pair of side members or jaws Ill each of which consists of an inner plate H preferably made of metal, .an intermediate layer or sheet of asbestos I2 01' other heat resisting material, and an outside layer or cover 13 which is preferably made of Bakelite or material having qualities of low heat conductivity. Said parts ll, I2 and I3 are held in assembled position by screws l4. Extending above each of said side members Ill and preferably integral with said outside layers I3 is a pair of ears l5 spaced apart, while extending above is a handle member it. My device is opened or closed by the movement of said handle members I6 in the usual way. Said ears I 5 have holes [8 extending therethrough into which a pin l9'extends, extending between the holes I8 in both said ears and thereby movably holding the .side members ill of my device together. A spring 20 extends between said side members ID and is coiled around said pin 19 as illustrated in Figure 3 of the drawings, its

ends bearing on said handle members It as at 2|, and being so positioned and tensioned as to normally keep my said device closed.

In one of the side members I ll a recess 24 is formed which terminates at one end in an interior inner recess 25 which extends into the metal inner plate H, and is adapted to receive a bulb 21 of a well known type of thermometer such as a mercury thermometer, which has the usual tube 28 which fits into said recess 24, and has a scale 29 to indicate the temperature. Ad-

jacent said scale 29 there are arrows or guide marks 30 and 3| to indicate the lowest and the highest temperature respectively at which my device is effective and safe. Said recess 24 extends from the outer surface of a side member Ill slightly into said intermediate layer l2, and. the said tube 28 is preferably slightly below said outer surface. Said recess 25 extends into the interior of said side member as illustrated in Figure 5 of the drawings, and said bulb 21 extends into said metal inner plate ll so that the mercury therein will immediately respond when said inner plate H is heated. It is protected exteriorly by said outside layer l3.

In operation my device is heated until the mercury in said tube 28 reaches the arrow 3 l,.whereupon it is placed on a curl until the curl is set or until the mercury returns to the said arrow 30, which indicates that my device has cooled to a point where it is no longer effective.

In the modification shown in Figures 6, 7 and 8, I provide the usual side members 35 consisting of an inner plate 36 preferably of metal, an intermediate layer or sheet of asbestos 31, and an outside layer or cover 38 which is preferably made of Bakelite or the like, being the same construction as the said side members l0. One of said side members has a recess 4! therein extending into said inner plate 36, around which recess a housing 39 is formed having an outer rim 40, in

which housing a resistance or dial type of ther mometer 42 of a well known type is mounted, which has a visible pointer 43 and a scale 44 on the face thereof, with guide marks 45 and 46 V to indicate the lowest and the highest temperatures respectively, for the same purpose as the arrows 30 and 3| previously described. This thermometer 42 projects beyond the outer surface of said side member 35 it is mounted in, as illustrated in Figure '7 of the drawingsr V convenient and unobstructed inspection in the use. of the device;

- ALBERT S. MOFFAT. 

